Issues regarding `Self` & `self` (in patterns)

[pksunkara]

I have talked with @lnicola and decided that it's better to create an issue for this. Both of them are working fine for structs but they have a few issues for enums.

Variant not being auto completed

Here, I wanted to do Self::Foo but as you can see Foo is missing from the list

Related #4650 (solves some of the issues in it if this is solved)

Fixed in #6960

Self not found in match

Here, self resolves to &A and if I try to type Self, I don't get any completions at all. (Also weirdly I get Some which should not because self does not resolve to an option)

Ideally, I want to see both Self and Self::Foo in the completion list. (Because if we type A, we get both A and A::Foo)

Related #6404
Related #6550 (Fixing that should solve a part of this, but not fully)

[ice1000]

I guess it also has something to do with #1908